OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (27, -254, 1008, -1440).
FORMULA
a(n)=(12^(n+3)-28*6^(n+3)+48*5^(n+3)-21*4^(n+3))/336. [Yahia Kahloune, Jun 11 2013]
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved